Closure flap folding and envelope stacking mechanism for envelope machines



Sept; 30, 1952 Filed July 13, 1948 CLOSURE FLAP Fb v E. "HEYWOOD LDING AND ENVELOPE STACKING MECHANISM FOR ENVELOPE MACHINES 5 Sheets-Sheet l "Evan/or- [Tl/c2004;

\g E. HEIYWOOD Sept. 30, 1952 CLOSURE FLAP LDING AND ENVELOPE STACKING MECHANISM FOR ENVELOPE MACHINES 5 Sheets-Sheet 2 Filed July 13, 1948 Sept. 30, 1952 v. E. HEYWOOD 2,612,088

CLOSURE FLAP FOLDING AND ENVELOPE STACKING MECHANISM FOR ENVELOPE MACHINES Filed July 13, 1948 5 Sheets-Sheet 3 Sept. 30, 1952 E O D 2,612,088

V. E. H CLOSURE FLAP FOLDING AND ENVELOPE STACKING MECHANISM FOR ENVELOPE MACHINES Filed July 13, 1948 5 Sheets-Sheet 4 Vgzce fEi/y and Sept. 30, 19 2 v. E. HEYWOOD 2,612,088

CLOSURE FLAP FOLDIENG AND ENVELOPE STACKING 1 MECHANISM FOR ENVELOPE MACHINES 5 Sheets-Sheet 5 Filed July 13, 1948 i 91 l i 9 I. 5921 H Patented Sept. 30, 1952 CLOSURE FLAP FOLDING AND ENVELOPE STACKING MECHANISM FOR ENVELOPE MACHINES Vincent E. Heywood, Worcester, Mass., assignor to United States Envelope Company, Springfield, Mass., a corporation of Maine Application July 13, 1948, Serial No. 38,495

4 Claims.

The present invention relates to envelope machines and more particularly to such machines of the rotary type wherein the several operations involved in the forming of envelopes are performed in a continuous manner by the passage of the material from end-to-end in the machine in rolling contact with the various instrumentalities thereof.

More specifically, the mechanism of the present invention is located at the delivery end of the envelope machine and is concerned with the folding down, and where need be with the preliminary scoring of the gummed and dried closure or seal flaps of already-formed envelopes emerging successively from the drying apparatus of such a machine, as well as with the stacking of the socompleted envelopes in face-to-back relation. After passing through the mechanism comprising the present invention, the envelopes are completely formed and ready for boxing or packing.

A primary object of the present invention is to provide for envelope-making machinery a simplified closure flap folding means which is capable of eificient high-speed operation.

A further object of the present invention is to provide in combination with such closure or seal flap folding means, an effective mechanism for stacking the completely formed envelopes in faceto-back relation.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the accompanying drawings,

Fig. 1 represents a side view of the delivery portion of a rotary envelope machine in which the present invention is incorporated.

Fig. 2 represents a longitudinal vertical sectional view of parts of the mechanism disclosed in Fig. 1.

Fig. 3 represents a backside view of the mechanism disclosed in Fig. 1. 1

Fig. 4 is a schematic view, showing in sequenc from left. to right, the operations performed on successive envelopes by the devices of Fig. 2, said devices in Fig. 4 being shown in an abnormal spaced or separated relation.

Fig. 5 is a view similar to Fig. 4, but showing the envelopes in plan.

Fig. 6 represents a vertical sectional view taken substantially along the line 66 of Fig. 1.

Fig. 7 represents a vertical sectional view taken substantially along the line 1'I of Fig. 6.

Fig. 8 represents a vertical sectional view taken substantially along the line 8-8 of Fig. 1.

Fig. 9 represents a vertical sectional view taken substantially along the line 99 of Fig. 8.

Fig. 10 represents a vertical sectional view taken substantially along the line l0-l 0 of Fig. 1.

Fig. 11 represents a vertical sectional view taken substantially along the line ll-li of Fig. 10.

Fig. 12 represents a fragmentary vertical sectional view taken substantially along the line l2|2 of Fig. 3.

Fig. 13 represents a vertical sectional view taken substantially along the line l3l 3 of Fig. 1.

Fig. 14. represents a vertical sectional view taken substantially along the line 14-44 of Fig. 1.

Fig. 15 represents a sectional view taken substantially along line I5I5 of Fig. 1.

Fig. '16 represents a sectional view taken substantially along line [6-46 of Fig. 13.

The present invention is concerned with the folding, and where need be with the preliminary scoring of the seal flap portions of envelopes, as well as the positioning of the envelopes with their seal flaps thus folded down upona stacking table in face-to-bacl: relation. Accordingly, the devices for fabricating the envelopes, up to the point where they enter the present mechanism, are not herein illustrated or described. It will be understood, however, that the illustrated mechanism desirably forms a part of a complete envelopemaking machine. More specifically, the present mechanism is adapted to receive successive envelopes from an envelope drying device with the side and bottom flap portions of each envelope folded over and adhered to each other, and with the seal flap portion gummed and extending from each envelope body in an unfolded condition, as is illustrated in Figs. 4 and 5.

It is contemplated that the envelopes will have their gummed seal fiaps dried before entry into the present mechanism, by apparatus of the type disclosed in my copending application, Serial No. 21,673, filed April 17, 1948, Drier Mechanism for Envelope Machines. However, other drying mechanism may be employed to supply the envelopes which are acted upon by the present mechanism.

Referring particularly to Figs. 1, 3, 6, and 10, the present mechanism includes a table top 25) upon which is mounted a pair of spaced apart vertically disposed brackets 21 and 22 between which the present mechanism is mounted. The present mechanism is adapted to be powered by any appropriate means, such as an electric motor (not herein shown), which motor may be connected with a horizontally disposed shaft 23 which is located beneath the level of the table top and at one side portion thereof. Mounted upon one end of the shaft 23 is a bevel gear 24 meshing directly with a bevel gear 25 carried upon the lower end of a vertically disposed shaft 26 which is suitably journaled within a housing 21 carried directly upon one side portion of the bracket 22. The upper end portion of the shaft 26 has secured thereto a bevel gear 28 which is adapted to drive a horizontally disposed shaft 29 through the medium of a bevel gear 30. As shown in Figs. 3 and 10, the shaft 29 extends out of the housing 2'! and has its left-hand end portion, as viewed in Fig. 10, journaled directly in the bracket 2|. From the above, it is manifest that the main power shaft 23 functions positively to drive the shaft 29 in a clockwise direction, as viewed in Fig. 1.

Referring now to Figs. 1, 3, 10, and 12, there is provided on the shaft 29 a gear 3| which meshes directly with a similar gear 32 carried upon a stub shaft 33 which is carried directly upon the bracket 22 in a manner as best disclosed in Fig. 12. This gear 32 is an idler gear which meshes directly with a gear 34 carried upon ashaft 35, as is best disclosed in Figs. 1 and 6. Shaft 35 has its opposite end portions iournaled directly within the brackets 2| and 22. This idler gear 32 also meshes with a gear 36 carried upon the right-hand end portion of a jackshaft 31 which is mounted directly within a bracket 38 carried upon a cross rod 39secured between the oppositely disposed brackets 2| and 22 in a .manner as particularly disclosed in Fig. 6. Thus, this shaft 31 .is driven positively at all times by means of the main shaft 23.

Referring nowparticularly to Figs. 1, 3, 6, and 15, it is to be understood that the left-hand end portion of the shaft 31, as viewed in Figs. 6 and 15, has secured thereon a sprocket wheel 44 about which is trained a sprocket chain 4| which functionsto rotate a suction roll 42. This suction roll 42 corresponds to the suction roll 46 of the above-mentioned drier application, and it is carried by a shaft 43 having a sprocket wheel 44 mounted thereon and driven by means of a sprocketchainM. The periphery of the suction roll is provided with .a plurality of apertures Whichareconnected with a vacuum pump so that as the roll is rotated in the clockwise direction, as viewed in Fig. 1, it will function to-draw successive'envelopes from between cooperating pairs of drier fingers (not shown), to the end that such envelopes will be delivered toward the mechanism shown in Fig. 2.

That is to say, the successive envelopes are removed from the drier mechanism by the suction rol142, so that-the envelopes are delivered toward the present mechanism in a manner as particularly disclosed in Figs. 4 and 5. More specifically, each envelope is delivered toward the present mechanism bottom edge foremost and with the extended seal flap trailing with its gummed portion facing downward. The first operation of the present mechanism is to square up the envelopes particularly disclosed in Figs. 6 and 7.

Any conventional Roll 46 is mounted directly upon shaft 35, and thus rotates in unison therewith in a clockwise direction, as viewed in Fig. 1. Roll is mounted upon a shaft 47, the opposite end portions of which are carried by the brackets 2| and 22. Mounted directly upon the shaft 41 is a gear 48 which meshes with gear 34 carried upon the lower squaring up shaft 35. Thus, it is manifest that the main drive shaft 23 functions to rotate the squaring up rolls 45 and 48 in unison. Still referring to Figs. 1, 6 and 7, it is to be understood that the lower roll 45 is provided with a pair of radially disposed fingers 49, 49, against which the bottom edge portion of each envelope is adapted to be delivered by means of the above noted suction roller 42. Since these fingers 49, 49 are aligned with one another. they function to square up each envelope which is delivered there against. It is to be noted that the upper roll 45 is provided with a pair of apertures 50, 50 which correspond to the fingers 49, 49, so that as the rolls 45 and 46 rotate, the fingers will be received within the apertures 50, 50. As may be particularly seen in Fig. '7, the upper roll 45 is provided across its periphery with a recessed portion 5| which permits the envelopesto be freely delivered against the fingers 49, 49, and thereafter to be properly aligned before the rolls 45 and 45; actually engage the same to continue their feed in a right-hand direction, as viewed in Fig. 1.

Once an envelope has been properly alined by the fingers 49, 49, the continually rotating rolls 45 and 46 will function to advance the same toward the right-hand end portion of the mechanism and, more particularly, toward the seal flap folding means which will be presently described. With certain materials it may be advantageous, before such folding, to preliminarily score along the fold line and for that purpose any suitable scoring means may be employed; for example, referring to Figs. 1, 10 and 11, it will be recalled that the shaft 29 is driven directly by the main drive shaft 23 and has secured thereupon a gear 3L, This gear 3| meshes directly with a gear 52 carried upon a shaft 53, the opposite end portions of which are carried by the brackets 2| and 22. Thus, the shafts 29 and 53 are driven in unison. Mounted upon the shaft 29 is a scoring roll 54 which is best illustrated in Fig. 11. Disposed longitudinally across the surface of the scoring roll 54 isa scoring knife 55, the sharpened edge portion of which projects slightly beyond the periphery of the roll 54. Cooperating with this scoring roll 54 and knife 55 is an upper scoring roll 58 which, preferably, is prefabricated from rubber, or other similar soft material.

From the above, it is to be understood that as the squaring up rolls 45 and 45 deliver an envelope in a right-hand direction, as viewed in Fig. 1, the bottom edge portion of each envelope will be delivered between the bite of the scoring rolls 54 and 56 which will, in turn, continue to advance the envelope at the same speed as the squaring up rolls. The knife 55 is so positioned and the scoring rolls 54 and 55 are so timed that the knife will function to partially crush the material between itself and the rubber roll 56 in a manner so as to provide a score along the line 57, as particularly disclosed in Figs. 4 and 5. Thereafter, the scoring rolls 54 and 56 will continue to advance each envelope in a right-hand direction until the same is delivered to the folding mechanism which is hereinafter described in detail.

Referring now to Figs. 1, 3 and 8, it is to be understood that the lower scoring roll gear 3| meshes directly with a second idler gear 58 which is carried upon the bracket 22 in a manner similar to the mounting of the gear 32, as disclosed in Fig. 12. Also meshing with the idler 58 is a gear 59 carried upon a shaft 60 whose opposite end portions are carried within the brackets 2| and 22. Thus, the drive shaft 23 functions positively to drive this shaft 60 at all times. Meshing with this gear 59 is a similar gear 6| carried upon a hollow cylinder 62 which is journaled upon a stationary hollow conduit 53. Thus, the shaft 60 and the sleeve 62 rotate in unison.

The lower shaft 60 carries thereupon a lower folding roll 64 which cooperates with an upper suction roll 65 which is integrally formed with the sleeve 62. The left-hand end portion of the conduit 63 is closed over, while the right-hand end portion is provided with an elbow 66 which connects the conduit with a vacuum-creating mechanism, not herein disclosed. It is sufficient to state that this vacuum-creating mechanism tends to maintain the inner portion of the conduit $3 at a negative pressure at all times during the operation of the present mechanism.

Referring now to Figs. 8 and 9, it is to be understood that the conduit 63 is provided intermediate the end portions of the suction roll 65 with an elongated slot Bl which periodically communicates with a radially disposed slot 68 formed within the peripheral portion of the roll 65. An adjusting strip 69 is embedded within the roll 65 for the purpose of governing the opening of the slot 68. From the above, it is to be understood that as the rolls 64 and 65 rotate, the slot 88 will be periodically placed in communication with the central portion of the conduit 63. More specifically, the slots 61 and 68 are so arranged that the open end portion of the slot 68 will engage the seal flap portion of each envelope, immediately adjacent its juncture with the envelope body or along one side of the score line 57, if such has been formed, in a manner as particularly illustrated in Figs. 4 and 5. Thus, since the inner portion of the conduit 83 is maintained at a negative pressure, the suction created within the slot 68 will cause the ungummed surface of each envelopes seal or closure flap to be seized and held by suction against the periphery of the roll 65, immediately adjacent the line of juncture 5? of said flap with the envelopes body portion. 4

By this time, in the case of each envelope, said body or pocket portion, of double thickness substantially throughout, has passed completely through the rolls 64, 65, and being without support beyond said rolls has tended to sag downwardly or to bend away from the horizontal plane of the envelopes movement through the several pairs of rollers 45, 46, 54, 5t .and 64, 65. This tendency increases as the suction-gripped closure flap, by further rotation of roll 65, starts to move in an upward direction, beyond the point or line of tangency between the two rolls 54 and 65, with the result that the two-thickness envelope body is in effect suspendedfrom the suctionally-gripped closure flap and tends to bend over more and more into substantial parallelism with such closure flap, as the latter is carried upwardly by the rotation of roll 65. Finally, as this movement continues, the bend in the material between body portion and closure flap is converted to a fold; this occurs as the suction slots 68 come opposite to a roll 70, which, as shown in Fig. 2, is tangent to the roll 85 at a point well above the horizontal plane of the envelopes travel through the pairs of rolls 45, 46, 54, 56 and 64, 65.

Referring now to Figs. 1, 8, 13 and 16 it is to be noted that the folding roll H! has its opposite end portions loosely journaled in a pair of bell crank lever elements I and 12, the mid-portions of which are respectively pivoted upon the opposite end portions of the lower shaft 60. A coil spring 13 functions to bias each of the levers H and 12 in a counterclockwise direction, as viewed in Fig. 16. More specifically, one end portion of each of the springs 13 is disposed within an aperture 14 provided by each of the levers H and 12. The other end portion of each of the springs engages a boss 15 which extends from the adjacent bracket 2| or 22. Thus, the roll 10 is biased toward the suction roll 65 so that as the roll 65 continues to rotate, it will deliver an envelope between itself and the roll 10, the pressure of the latter completing the crease or fold between the single thickness closure flap and the 7 double thickness body portion of each envelope.

After this so-folded upper edge of each envelope passes from between the bite of the rolls 65 and it, the suction slot 68 is no longer incommunication with the conduit 63 and, therefore, the envelope no longer has any tendency to cling against the periphery of the roll 65 and thus, each envelope will be delivered toward the peripheral portion of an envelope transferring mechanism which is generally designated by the numeral 16. 7

Referring to Figs. 1, 8 and 13, it is to be noted that each of the levers H and 12 has depending therefrom a finger portion 17, H which engages a cam shaft 78. This cam shaft 18 has its opposite end portions mounted directly within the brackets 2| and 22, and is provided intermediate its ends with a pair of fiat faces l9, 79, against which the bell crank fingers ll. 11 abut. Also, the cam shaft 78 is provided with a handle element 80 which permits an operator to rotate the cam shaft so as to force each of the bell crank levers ll and T2 in a clockwise direction, as viewed in Fig, l, to the end that the folding roll 10 may be spaced to the desired amount away from the peripheral portion of the suction roll 65.

Referring now to Figs. 1, 3 and 6, it is to be noted that the opposite end portions of the upper squaring up shaft 41 are each J'ournaled directly within a block 8| which is slidably mounted within a vertically disposed slot 82 formed in each of the bracket walls 2| and 22. The upper portion of each of the blocks 8|, 8| is provided with a circular boss 8 l which is received within a suitable opening formed in a strip 83 secured along the top portion of each of the brackets 2| and 22. Coil springs 84, 84 disposed between the strip 83 and the blocks 8| function normally to maintain the blocks in their lowermost positions. An adjusting screw 85- is threaded directly within the boss portion 8| of each of the blocks so as to provide a means for adjusting the lowermost position of the blocks, to the end that the desired spacing between the upper and lower rolls 45 and 46 may be readily obtained. In order to raise the upper roll 45 above the roll 46 for the purpose of facilitating the adjustment and maintenance of the present mechanism, there are provided a pair of cam elements 86, 86, each of which is rotatably mounted within an arcuate saddle 87 formed in each of the brackets 2| and 22, as may beparticularly seen in Fig. 6. Each of these cams engages the lower portion of a respective one of the blocks 8|, so that as the cams are rotated, they will function to raise the blocks 8i, 8I against the force of their coil springs. A pair of handle members 8B, 88 are provided for permitting the operator to rotate each of the cams 86, 86 so as to raise the upper roll 45 away from the surface of the lower roll 49. It is to be particularly understood that the scoring roll 56 and the suction roll 65 are also provided with similar roll elevating means so that an operator may elevate each of these upper rolls above their associated lower rolls whenever the occasion arises.

Referring now to Figs. 1, 2 and 14, it is to be understood that the gear 59 of the lower folding roll shaft 60 meshes directly with an idler gear 89 carried upon a stub shaft 90 which is journaled within the bracket 22. This idler gear 89 also meshes with a gear 9I which is secured rigidly upon a sleeve 92 journaled upon a stationary hollow conduit 93. The opposite end portions of the conduit 93 are secured between the brackets AI and 22. Thus, rotation of the main shaft 23 will function to rotate the gear 9| and the sleeve 92 in a positive fashion.

Referring particularly to Figs. 2 and 14, the left-hand end portion of the conduit 93 is closed over,'while the right-hand end portion has secured thereto an elbow connection 94 which communicates directly with a vacuum-creating means for the purpose of maintaining the inner portion of the conduit 93 at a negative pressure at all times during the operation of the present mechanism. Intermediate the end portions of the sleeve 92, the conduit 93 is provided with a relieved portion 95 which forms an arcuate chamber between the peripheral portions of the conduit 93 and the sleeve 92. Communicating with this chamber are a plurality of radial ports 99, 96. Also, a plurality of radial ports 91, 91 are formed within the sleeve 92 so that as the sleeve rotates about the stationary conduit 93, the ports 9'! will communicate intermittently with the conduit ports 96, 96. Secured upon the sleeve 92 are three envelope delivery wheels 98, 98. Each of these wheels 98 is secured rigidly upon the sleeve 92 and is provided with an inner annular chamber 99 which communicates directly with a respective one of the sleeve ports 91, 91. As may be seen particularly in Fig. 2, each of the wheels 98, 98 is provided upon its periphery with three flat surfaces 98', and communicating with each of these flat surfaces is a radial conduit I08, the inner end portion of which communicates with the annular chamber 99. From this, it will be appreciated that as each of the wheels 98, 98 rotates about the conduit 93, each of the conduits I99 will be periodically connected with the vacuum-creating means.

Referring particularly to Figs. 2 and 4, it is to be understood that the wheels 98, 98 are so timed that as the completed envelopes, with their seal flaps folded are successively delivered upwardly from between the bite of the rolls 65 and 10, the upper portion of each envelope will be positioned within one of the wheel flats 98', 98 of each of the three wheels. As soon a an envelope is so positioned within the wheel flats, the conduits I08 will each be in a position such that it will be placed in communication with the inner portion of the conduit 93, to the end that a suction will be formed within the conduit I99. Thus, this suction will cause the envelope to adhere to the peripheral portions of the wheels so that the envelope will be carried thereabout as the wheels :rotate in a clockwise direction, as viewed in Fig. 1. Furthermore, it is to be understood that when the envelope reaches the right-hand position disclosed in Fig. 1, the vacuum within the conduits I09, I00 will be broken, to the end that the envelope will be deposited upon a horizontally disposed table IIlI. Thus, as the wheels continue to rotate, envelopes will be successively stacked upon the table IIJI and thereafter, appropriate means, not herein shown, may be provided for removing these envelopes from the table in a conventional manner.

I claim:

1. In mechanism of the class described, for folding down the extended seal or closure flaps of envelopes, the combination with means for advancing successive envelopes flatwise in a substantially horizontal path, with their bottom folds or edges foremost and their extended seal flaps in trailing relation, glued margins facing downward, of a pair of cooperating rolls between which each envelope is received at the end of said path, and beyond which said envelopes pocket portion is wholly unobstructed and unsupported, whereby gravity is eifective thereon to initiate between said pocket portion and its associated seal flap a bending in the direction of the desired ultimate fold or crease between said parts, means carried by th upper roll of said pair for gripping each seal flaps upper surface adjacent the zone of said desired fold or crease, whereby in the ensuing upward movement of said gripping means by said upper rolls rotation, said pocket portion becomes pendent from its associated seal flap, to increase said gravitational bending action, and a third roll cooperating with the upper roll at a point in said upward move ment to receive said bend and to press same into a fold or crease, substantially at the line of juncture between seal flap and pocket portion.

2. In mechanism of the class described, for folding down the extended seal or closure flaps of envelopes, the combination with means for advancing successive envelopes flatwise in a substantially horizontal path, with their bottom folds or edges foremost and their extended seal flaps in trailing relation, glued margins facing downward, of means operable during such advancement for scoring the underside of each envelope at the juncture of its seal flap and its pocket portion, a pair of cooperating rolls between which each envelope is received at the end of said path, and beyond which said envelopes pocket portion is wholly unobstructed and unsupported, whereby gravity is effective thereon to produce bending on said score line in the direction of the desired ultimate fold or crease between seal flap and pocket portion, means carried by the upper roll of said pair for gripping each seal flaps upper surface adjacent the zone of said scoring, whereby in the ensuing movement of said gripping means by said upper rolls rotation, said pocket portion becomes pendent from its associated seal flap to increase said gravitational bending action, and a third roll cooperating with said upper roll at a point in said upward movement, to receive said score and to press same into a fold or crease.

3. In mechanism of the class described, for folding down the extended seal or closure flaps of envelopes, the combination with means for advancing successive envelope flatwise in a substantially horizontal path, with their bottom folds or edges foremost and their seal flaps in trailing relation, glued margins facing downward, of a pair of cooperating rolls between which each envelope is received at the end of said path, and

beyond which said envelopes pocket portion is wholly unsupported and unobstructed, whereby gravity is effective to initiate between said pocket portion and its associated seal flap, a bending in the direction of the desired ultimate fold or crease between said parts, suction gripping means carried by the upper roll of said pair for seizing each seal flaps upper surface adjacent the zone of said desired fold or crease, whereby in the ensuing movement of said suction gripping means by said upper rolls rotation, said pocket portion becomes pendent from itsassociated seal flap to increase said gravitational bending action, and a third roll cooperating with said upper roll at a point in said upward movement to receive and press said bend into a fold or crease, and to pro ject each so-completed envelope upwardly, upon release of same by said suction-gripping means.

4. In mechanism of the class described, for folding down the extended seal or closure flaps of envelopes, the combination with means for advancing successive envelopes flatwise in a substantially horizontal path, with their bottom folds or edges foremost and their seal flaps in trailing relation, glued margins facing downward, of a pair of cooperating rolls between which each envelope is received at the end of said path, and beyond which said envelopes pocket portion is wholly unsupported and unobstructed, whereby gravity is effective to initiate between said pocket third roll cooperating with said upper roll at a point in said upward movement to receive and press said bend into a fold or crease, and to project each so-completed envelope upwardly, upon release of same by said suction-gripping means, a stacking table, and a rotating transfer means to receive each upwardly projected envelope and to convey it through an arc, for deposit, creased edge downward, upon said stacking table.

VINCENT E. HEYWOOD.

REFERENCES CITED The following references are of record in thefile of this patent:

UNITED STATES PATENTS Number Name Date 2,078,188 Winkler et a1 Apr. 20, 1937 2,244,723 Novick June 10, 1941 

